高牌号无取向硅钢冷轧边裂原因分析与改进措施  

ANALYSIS AND IMPROVEMENT OF EDGE CRACKING IN COLD ROLLING HIGH-GRADE NON-ORIENTED SILICON STEEL.

作　　者：陈建华 温健 赖籽屹 Chen Jianhua;Wen Jian;Lai Ziyi(Xinyu lron and Steel Group Co,Ltd;Jiangxi XISCO-WISDRI New Material Co.,Ltd;Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology)

机构地区：[1]新余钢铁股份有限公司 [2]江西新钢南方新材料有限公司,江西新余338000 [3]江西理工大学材料冶金化学学部

出　　处：《河南冶金》2024年第4期24-27,共4页Henan Metallurgy

摘　　要：针对高牌号无取向硅钢冷轧边部出现裂口的问题,借助金相显微镜、扫描电子显微镜等检测设备,对带钢边部显微组织及裂口形貌进行分析,结果表明:由于剪切边部质量差和常化温度过高导致带钢边部晶粒尺寸过大,从而造成冷轧带钢边部裂口。通过优化常化工艺,控制常化后晶粒尺寸,同时调整剪切工艺参数,减少了高牌号无取向硅钢冷轧时边部裂口及断带的问题。In response to the problem of cracks in the cold-rolled edges of high-grade non-oriented silicon steel,the microstructure and crack morphology of the steel strip edges were analyzed using detection equipment such as metallographic microscope and scanning electron microscope.The results showed that due to poor quality of the edge and high normalization temperature,the grain size of the strip edges was too large,resulting in cracks in the cold-rolled steel strip edges.By opti-mizing the normalization process,controlling the grain size after normalization,and adjusting the shear process parameters,the problems of edge cracks and strip breaks in high-grade non oriented silicon steel during cold rolling have been reduced.

关 键 词：无取向硅钢 冷轧 边部裂口 晶粒 剪切 

分 类 号：TG142.1[一般工业技术—材料科学与工程]